Paper-bag machine



C. F. SMITH.

PAPER BAG MACHINE.

APPLICATION FILED AUG. I4, 1913 Patented M3129, 1920.

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C. F- SMITH.

PAPER BAG MACHINE.

APPLICATION FILED AUG- 4, 918- v 7 1,333,285. Patented Mar. 9,1920.

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PAPER-BAG MACH'INE.

APPLICATION FILED AUG-l4, 191B.

Patented Mar. 9

1920. 1' SHEETS-SHEET 3.

C. F. SMITH.

PAPER BAG MACHINE.

APPLICATION FILED AUG. 14, 1918.

153335285 Pawnted Mar. 9, 1920.

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C. F. SMITH.

PAPER BAG MACHINE.

APPLICA'HON FlLED AUG- 14, 1912:.

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PAPER BAG MACHINE. APPuc'ATlou FILED mama, 1918.

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PAPER BAG MACHINE.

APPLICATION HLED' AUG- 14. 1918.

Patented Mar. 9,1920.

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CHARLES r SMITH, OF WATERTOWN,.1\TEW YORK, ASSIGNOR TO 'noW ANn BAG ANDPAPER COMPANY, or DEXTER, NEW YORKMA'CORPOLRATION or NEW YORK.

PAPER-BAG MACHINE.

Specification of Letters Patent. t t 9, 19

Application filed August 14, 1918. Serial No. 249,854.

- i'ngis a specification.

This invention relates to paperbag machine's of that'classwhich isprovided for forming from tubular blanks, having opposite inwardlyfolded tucks, paperbags com- 10111 known as self-opening square'paper.

those parts of such a paper bag machine as are provided for forming thewell known diamond fold on the leading end of the bag blank. 7

The object of my improvements is to provide means of simple constructionwhich are reliable and accurate in their operation, for coaction withknown means, for improving, both in quality and quantity, the prodnot ofpaper bag machines of the class specified. To these endsmy improvementscomprise features which'are' illustrated in their preferred embodimentin the drawings accompanyin-g this specification, wherein:

Figure 1 is a fragmentary side elevation, partly in section on line 1, 1of Fig. .2, of so much of a paper bag machine as will sufiice toillustrate those parts thereof which perform the earlier steps in theoperation of my improvements. Fig. 2 is an elevation looking in thedirection of arrow 2 of Fig. 1, with some of the parts of said Fig. 1omitted. Figs. 3, 4t, 5 and 6 are side elevations, respectively, similarto a portion of what is shown in Fig. 1 and illustrating successivesteps in the operation of the mechanism. 1 Fig 7 is a side elevation,similar to the side elevation of Fig. 1, showing .a' part of what isshown in said Fig. 1 and illustrating an early step in the operation ofopening out the leading end of the bag blank preparatory to forming thediamond fold. Figs. 8, 9, 10, 11, 12, 13 and 14 are side elevationsrespectively similarto a,por-' tion ofwhatris shown in Fig. 7 andiillusI trating'successive steps in the operation of the "mechanismin' formingthe; diamondfold, Fig. 15is a plan view looking in the direction ofarrow l5 of Fig. 7, with-some My improvements pertain directly to blank8.

of the parts of said Fig. omitted, so as toishow more clearly theoperation of the mechanism. Fig. 16 is a plan view looking in thedirection of arrow 16 of Fig. 9. Fig. 17 is a plan view looking in thedirection of arrow 17 of Fig. 14. The vertical dot and dash lines 2, 2in Figs; 1, and 3 to 14 inclusive are in the same position relatively tothe fixed parts ofthe machine. All the1 figures of the'drawings are tothe same sea e. I

. The improvements illustrated and de-' scribed herein whileapplicableto a variety of types of paper bag machines are particularlyapplicable to a paper bag machine of the general character of that shownin Letters Patent No. 1,074,330, granted on my application, datedSeptember 80, 1913, and to which reference may be had.

The general plan of paper bag machine to which I have chosen toillustrate the application of my improvements includes a rotaryfolding-bed indicated in a general way by 3. Said folding-bed has afixed rear portion 4:, and aforward portion 5 pivotally mounted at 6coincident with the main transverse f0ldingline'7 of the bag Saidportion 5 is provided with opposite clips 9 and 10 forgripping the lowerplies of the bag-blank thereto, and fixed portion 4 is provided withopposite clips 11 and 12 for gripping the upper plies of the bag-blankthereto when the forward end of the blank is folded backwardly onto saidfolding bed portion 4.. v

Said portion 5 may be rotated in anticlockwise direction about the axisof shaft 6 through 'nearly 180 degrees for folding the leading end'13,of the bag-blank ontothe fixed rear portion 4 of the folding-bed, andthen back again for opening-out that leading endinto the diamond'fold.Shaft 6 may b'eoscillated at suitable times and clips 9, 10, 11 and- 12operated by known means, not shown. I

To increase the accuracy of the operation oflolips 11 and 12 ingrippingthe upper plies la er the bag-blank to the foldingbed, rear portion' l,there are provided opposite fingers 14 and 18, preferablypivotallymounted for oscillation with-shaft 19, aboveysaid folding-bed,and said shaft is parallel with theaxis of rotation of said folding-bed.These fingers have their op-. erative; ends 1el and'18 turned inwardlytoward each other, whereby they are adapted to enter the opposite sidetucks respectively of the bag blank as that blank is deliveredtangentially onto the folding-bed, Figs. 1 and 2. Said fingersmay beadjustably fixed in heads, as 20, adjustably fixed on shaft 19, and saidshaft may be oscillated to cause said fingers to swing as desired, bymeans of arm 21 fixed to said shaft, and which arm has pivotallyattached to its free end connection 22. Said connection 22 maybeoperably connected with a suitable cam, not shown, on shaft 30. Shaft 19has hearings in arms, as 23, outreaching from and fixed to cross rod 24of the machine.

For assisting the formation of the rear;

ward end of the diamond fold, as foldingbed portion 5 is rotated inclockwise direction from the position of Fig. 6 on through thepositionsof several of the successive figures, arm 25 is provided. Saidarm is preferably pivotally mounted for oscillation on shaft 26 abovefolding-bed 3 and said shaft is parallel with the axis of rotation ofsaid folding-bed. Said arm is actuated for entering the mouth of thebag-blank, as the leading end of said blank is opened out, and forpressing down the rear end of the diamond fold. Said arm preferablytermlnates at its free end'in aball 25, and the upper end of said armmay be adjustably fixed in head 27 turning freely on said shaft 26. Saidhead 27 has pivotally attached to a downwardly extending portionthereof, connection 28, which may be operatively connected with asuitable cam, not shown, on shaft 30, and through which means arm 25 maybe oscillated.

For coaction with said arm 25 in the formation of the rear end of thediamond fold, opposite folders 31 and 32'are provided for turninginwardly and downwardly the rear portion of the sides of the mouth ofthe bag blank. These folders are preferably hookshaped, having at theirfree ends approximately straight edges 31 and 32 the points 31 and 32 ofwhich are turned upwardly from the plane of movement of said folders,respectively. Said edges 31"-, 32, upturned at their ends 31", 32conform to the contour of those portions of the bag-blank which theyengage, respectively and thereby perform their function withoutderanging said blank.

Folders 31 and 32 are right and left hand duplicates and a furtherdescription of one will suflice for both. Folder 31 is preferably ofsheet metal and near that end thereof opposite. end 31 is slotted at 29.and through the slot passes screw 33 for adiustablv securing said folderto one end of shaft 34 mounted for oscillation in bea ring 35outstanding from the side of folding-bed 3. The axis of shaft 34 isnormal or approxigent to a circle having its center in the axis of shaft34 and, by adjusting said folder on the head of said shaft the diameterof said circle of tangency may be increased or decreased and the timingof said edge 31 relatively to the portion of the bag-blank engaged maybe varied. Power for oscillating shaft 34 at suitable times may beapplied through known means,-not shown, to gear 36 fixed to the lowerend of said shaft.

For pressing down the mid-portion of the rear end of the diamond fold incooperation with arm 25 and folders 31, 32, primary ironer 37 isprovided. Said ironer is preferably mounted for oscillation with shaft42 extraneous to folding-bed 3 and parallel with the axis of said bed.Said ironer is preferably bifurcated at 39 for straddling arm 25 wherebythe path of travel of said ironer is permitted to overlap a portion ofthe path of travel of said arm, see Figs. 7 to 10. For lightness andrigidity of construction said ironer is preferably carried by rod 40,adjustably held in head 41 which is adjustably fixed to shaft 42, and isprovided with bracing rod 43 fixed in said head and adjustably securedto rod by dog 44. For oscillating shaft 42, arm 45 fixed thereto, hasconnection 46 pivoted to its free end and the other end of saidconnection is operatively engaged by a cam, not shown, 011 shaft 30.

Secondary ironer 47 is adj ustably mounted in the free end of arm 48,which for convenience, may be mounted for free rotation on shaft 26.Said ironer is efiicient for ironing down and completing the diamondfold after the partially completed fold has been operated upon by theinstrumentalities previously described herein. For actuating said ironerthere is provided a toggle mechanism comprising arm 49 freely'moun tedon shaft 42 and link 50, pivoted at one end to the free end of said arm49 and at the other end to arm 48, about midway the length thereof. Whensaid arm 49' and link 50 are extended in a straight line, see dottedposition in Fig. 7, said secondary ironer is in operative relation tofolding-bed 3 and just clears that bed. By this arrangement of togglemechanism, the action of said ironer is had without permitting theironer to strike the folding-bed, and the mechanism may be run at highspeed without noise or W- V Said ironer 47 isbifurc-ated at 51 forstraddling said primary ironer 37' whereby the paths of travel of saidironers are permitted to overlap and said secondary ironer obtainscontrol of the bag-blank before the primary ironer relinquishes controlthereof. thereby insuring continuity of control and accuracy ofoperation and quality of productl :Foratuating-iioner 47 arm 52, whichis coaxially mountedwith arm 49. and fixed relatively thereto, bothbeing loosely pivoted on shaft 42, has connection 53 pivotally connectedtoxits free end. The other end'of'said'connection 53 is operativelyengaged by a cam, not shown, on shaft 30.

The operation of my improved mechanism is asfollows: The leading end ofthe bagblank is advanced, properly timed, in the about its axis 6 andfingers 14, 18 areswung outwardly away from the folding-bed, ends. 1 1*,l8 'maintaining their positions-withinthe side tucksrespectivelythroughthe' positionof Fig. 3 to that of Fig. 4. Foldingbed 3,continuing its clockwise rotation and portion 5 its anti-clockwiserotation, said portion 5'now moves backwardly. anddown-- wardly towardfixed portion 1 of said bed and fingers 14, 18 swing back again towardthe folding-bed, Fig. 5, the operative ends thereof stillmaintainingtheir positions in the side tucks respectively. Presently the severalparts reach positions, respectively, shown in Fig. '6 wherein ends 1 1,.18 of fingers 1 1, 18 hold the upper vplies of the side trucksrespectively against the fixed portion 4 of the folding bedtherebyaffording sideclips 11, 12 free access to said side tucks and enablingthose clips to grip said upper plies withaccuracy to said portion 4 ofthe folding bed.

The. bag-blank beingnow in the grip of the two pairs of side clips,saidportion 5 of the folding-bed starts .on its clockwise mov,e-' mentto open out the mouth of the bagblank.- arm 25 commences-its downwardmovement fromtheposition of Fig. 1 and folders 31, 32 are ready to.swing inwardly and for wardly towardeach other forturning inwardly thesides of the rear end of the dia-- mond fold, all as shown inFigs. 7and15. In Fig. '8 the mouth-of'the bag-blank has been still furtheropened and arm 25 has entered "therein and has engaged the rear end ofthe diamond fold. At the same :time bifurcated primary ironer 37,straddling arm 25, has-commenced to descend from its up permost positionof Fig. 7. 1 In Fig. 9arm 25 ha'spres'sedthe rear. end of thediamond-fold "downwardly toward'the folding' bedlsuificiently to. permitfolders. 31, i

32 toirotate toward each other in the direction of travel of thefolding-bed,;as shown, thereby'turning inwardly the sides of the Irearend of the diamond fold. During these movements, portion 5 of the.folding-bed has coactedby continuing its. clockwise .movement andprimary ironer 37 has continued its downward. movement towarduthebagblank on the folding-bedand is aboutready to enter the mouth thereofrSee also. the plan view of Fig. 16.1 a

After havingperformedtheir function of turning inwardly the sides of therear end of the diamondfold, folders 31, 32 immediatel'y return to theirouter positions of Fig. 17 where they remain until called into operationon the next succeeding'blank.

Fromthe position ofFig. 9 to that of Fig. 10, arm 25 continues to swingin anti? clockwise direction, slightly faster. than the bag-blank isadvanced by the folding-bed, but not sofastasprimary virone-r 37 moves 1in the same direction. Therefore's'aidironer passes down into the mouthof the blank ahead of said arm and that'arm swings over its rear end,Fig. 11. At the same time sec ondary ironer 47 commences to descend fromits position of Figs. 7 and 10 to that of Fig. 11 with its rearwardbifurcated end straddling primary ironer 37 In Fig. 12 foldingbedportion 5 has :returned to coincidence with the general periphery of.the folding-bed, thereby completing its function .of opening out themouth of the blank for. formingthe diamond fold; arm 25 has started onits clockwise return movement, and engages for a moment the rear end ofthe diamond fold; primary ironer 37 has reached its position of nearestapproach, to the folding-bed and the rearward end of the diamond fold isheld down thereby; also secondary'ironer 417 has continued to descendandis about to engage the bag blank. In Fig. 13 arm 25 continues itsclockwise movement and has ceased to influence the bag blank; primaryironer 37 maintainsits position of Fig. 12 and secondary ironer 47 hasbegun to iron down the diamond fold. i

In Figs. 14'and .17 the diamond fold is just passing out fromunderprimary ironer 37 and secondary ironer 47 has reached its saidclips may regrip the blank later if de-.

sired.

The'function of my improvedmechanism is. now completed and thebag-blank, con-- tinuing. its ClOCkWlSG IIlOVGIIiGHiJ, may pass out.ifrom under :ironer 47 to suitable mechanism, not shown, fortransforming the'diamond fold into a completed bag bottom.

I claim: a

1. In a paper bag machineemploying a rotatable folding-bed, means forholding a bag-blank thereon, means for folding over the upper plies ofthe side tucks onto the folding-bed and means for gripping those upperplies to the folding-bed, the combina tion of opposite fingers movablymounted extraneous to said folding-bed and adapted to enter the oppositeside tucks respectively of said bag-blank as that blank is deliveredonto the folding-bed and actuated to follow the upper plies of said sidetucks as they are folded over onto the folding-bed and then to holdthose upper plies against said folding-bed untilthe upper plygripping'means grips said upper plies respectively to the folding bed.

2. In a paper bag machineemploying a rotatable folding-bed comprisingtwo portions one of which is actuated to be folded backwardly to deliverthe upper plies of the side tucks of the leading end of the blankagainst the other portion of said foldingbed, said other portion beingprovided with ipping means, the combination of opposite ngers pivotallymounted extraneous to the folding-bed and adapted to enter the oppositeside tucks respectively of thebag-blank asthat blank is deliveredontothe foldingbed, vmeans for swinging said fingers away from thefolding-bed as the leading end of said bag-blank is folded upwardlyrelatively to said folding-bedand for swinging said fingers toward saidfolding-bed V as the leading end of said bag-blank is folded backwardlyand downwardly toward said folding-bed and for holding the upper pliesof said side tucks respectively against the other portion of thefolding-bed, whereby the said gripping means are afforded free access tosaid side tucks and are enabled to grip said upper plies respectivelywith accuracy at predetermined points to said other portion of thefolding-bed.

3. In a paper bag machine employing a rotatable folding-bed, means forholding a bag-blank thereon, means for folding over the upper plies ofthe side tucks onto the folding bed and means for gripping those upperplies to the folding-bed, the combination of opposite fingers pivotallymounted extraneous to the folding-bed and on an axis parallel with theaxis of the folding-bed and adapted to enter the opposite sidetucks'respectively of the bag-blank as that blank is delivered onto thefolding-bed and actuated to follow the upper plies of said side tucks asthose side tucks are folded over onto the folding-bed and then to holdthose upperplies against said foldingbcd until the" upper ply grippingmeans grip said upper plies respectively to the folding-bed.

4. In a paper bag machine employing a rotatable folding-bed comprisingtwo portions one of which is actuated. for folding backwardly onto theother portion thereof the leading end of the bag-blank and means on eachfolding-bedporiion for gripping the bag-blank, the combination offingers extraneous to said folding-bed adapted and actuated for enteringthe side tucks of the bag-blank and for accompanying that blank duringits backward folding and for holding the upper plies of those side tucksturn'of the backwardly folding portion of the folding-bed to its initialposition, to

assist the folding of the rear portion of the diamond fold. V v 5. In apaper bag machine employing a rotatable folding-bed comprising twoportions one of which is movable and actuated for folding backwardlyonto the other portion thereof the leading end of the bag blank, meanson each folding-bed portion for gripping the bag-blank, the movableportion of said folding-bed being efficient upon its return movement toopen out the leading end of the blank, the combination of an armnrovably mounted extraneous to the foldingbed and actuated for enteringthe mouth of the bag-blank as the leading end of said blank is openedout, and for pressing down the rear end of the diamond fold.

6. In a paper bag machine employing a rotatable folding-bed comprisingtwo portions one of which is movable and actuated for folding backwardlyonto the other portion thereof the leading end of the bagblank, means oneach folding-bed portion for gripping the bag-blank, the movable portionof said folding-bed being eflicient upon its return movement to open outthe leading end of the blank, the combinationof an arm movably mountedextraneous to the folding bed and actuated for entering the mouth of thebag blank as the leading end of said blank is opened out, and forpressing down the rear end of the diamond fold, and opposite folderscarried by the folding-bed and mounted for movement toward each otherand in the direction of travel of said folding-bed for turning inwardlythe sides of the rear end of the diamond fold during the operation ofsaid arm.

7. In a paper bag machine employing a rotatable folding-bed comprisingtwo portions one of which is movable anda tuated for folding backwardlvonto the other portion thereof the leading end of the bagblank xmeansoneach folding-bed portion upon its returnmovement to open out the leadingend of theblank, the combination of an arm pivotally mounted extraneousto the'folding bed on an axis parallel with the axis of the folding-bedand actuated for entering the mouth of the bag-blank as'the leadingendof said blank is openedout and for -pres'sing down the rear end ofthe diamondfold and opposite folders pivotally mounted on thefolding-bedon-axes respectively normal to the axisfof rotation "of: saidfolding-bed and actuated rota'tively toward each other in the directionof travel a. of: said folding-bed for turning inwardly the 'sides oftherear endof-thediamond fold during the operation of said arm. 7

8. In a paper bag machineemploying a rotatable foldingbed and havingme'ansfor opening-out the leading end of the bag-blank into the diamondfold, the combination of an arms movably mounted extraneousto thefolding-bed and actuated for euteringthe mouth of the bag-blank as theleading end of said blank is opened out. and for pressing down therearend of the diamond fold, and a primary ironer movablv mounted extraneousto said folding-bed and actuated; for pressing down the mid-portion ofthe rear 'end ofthe diamond fold subsequent to the operation of saidarm.

a 9. In a pa er bag machine employing a rotatable folding-bed comprisingtwo portions one of which is movable and actuated for foldingbackw'ardlv onto the othe-rporfor gripping" the bag-blank, themovableportion of said folding-bed being efli'cient .upon its return movementto open out the leading end of the blank, the combination ofan armmovablvmounted extraneous :to

the fold ng-bed and actuated for entering the mouth of theba'g-blank asthe leading 'end of said blank is opened out, and for pressing down therear end of the diamond fold. opposite folders carried bv the foldingbedand mounted for movement toward eaoh other and in the direction oftravel of said folding-bed for turning inwardlv the sides of the rearend of the diamond fold during the operation of said arm,- and a primarvironer movablv mounted extraneous tosaid foldino-bed and actuated forpressing down the mid-portion of the rear endof the diamond foldsubsequent to the operation of sa.id-arm.- V

V .10. In a paper bag machine employing a rotatable ioldinx -bed and.ha'ving means ifor opening" out the leadingand of the lbaiz-blankintothediamond fold. the comzibination of an; arm i-pivr'ita'lly mountednexpt a aous t0 the tolding ed n an axis par pivotally rrnounted on thefolding-bed On axes respectivelynormal to the axis ofrotation of saidfolding bed and actuated rotatively toward each other in the directionof travel of-said folding bed forturning inwardly the sides of the rearend of the diamondfold during the operation of said arm, and;a;primaryironer pivctally mountedextraneous tothe folding-bed on anaxis parallelwith-the axis of rotation of the folding-bed and actuated forpressingdoivr'l the-mid portio'n. of, the rear end of the dia- -mondfold subsequent and supplemental to the operation of said am.

11. In a paper bag machine employing a rotatable folding-bed and havingmeans for opening out the leading end of the bag blank into the diamondfold, the combination of an arm pivotally mounted extraneous to thefolding-bed on an axis parallel with the axis of the folding-bed andactuated 'for enteringthe mouth of the bag-blank as the leadingend ofsaid blank is "opened out and for priessing'down therear en'd of'thediamond fold, oppositefolders pivotally mounted on the folding-bed onaxes respectively normal to the axis of rotation {of said folding-bedand actuated rotatively toward eac'hother in-the-direction of travel ofsaidfoldiaigbed 'for turning inwardly thesides of the rear "end of'thediamond fold during "the operation of said arm, and a primary ironer ispermitted to overlap a portion of the "path of travel ofsaid arm. 12. Inapaner baa machine employing arotatable folding-bed comprisingtwoport-ionsone-of which is movable .andadapted and a tuated for foldingbackwardly -ionto 1 the other portion thereof the leadin'sr end of thebag-blanki'means on each foldingb'ed'portion for gripping the bag-blank;the vmovable portionofasaid folding bed being eflic'ient; upon; itsreturn-movement to open outthe leading end of the blank thepcombinationofflan arm movablv "mounted extraneoust to the folding-bed and actuatedfor entering'the mouth.of the bag-blank as "the leading; end "of saidblank'is opened out, and for-pressing down tbe'rear end of-the diamondfold, and vopposite folders pivotallv mounted on the folding-bed on-axesrespectivelvf'normal to the axis of rotation ofsaid foldinqbed i and 'at-uated rotatively f toward each other in-the direction of ftrayel tionsone of Wlllth is movable'and actuated for folding backwardly onto theother portion thereof the leading end of the bagblank, means on eachfolding-bed portion for gripping the bag-blank, the movable portion ofsaid folding-bed being efficient upon its return movement to open outthe leading end of the blank, the combination of an arm vmovably mountedextraneous to r the folding-bed and actuated'for'entering the mouth ofthe bagblank as the leading end of said blank is opened out, and forpressing down the rear end of the'diamond fold, opposite folderspivotally mounted on the folding-bed on axes respectively normal to theaxis of rotation of said folding-bed and actuated rotatively toward each'other in the direction of travel of said'foldingbed for turninginwardly the sides of the rear end of the diamond fold during the 7operation of said arm, each 'ofsaid folders terminating in anapproximately straight edge tangent to a circle having its center in thepivotal axis of said finger, and means for adjusting said finger to varythe diameter of the circle of tangency and the timing 35 of operation. a

'14. In a paper bag ma hine employing 'a rotatable folding-bed andhaving means for opening out the leading end of the bagblank into thediamond fold, thecombination of an arm movably mounted extraneous to thefolding-bed and actuated for en-" tering the mouth of the bag-blank asthe leading end of said blank is opened out, and

for pressing down the rear end of the diamond fold. a primary "ironermovably mounted extraneous to said folding-bed and actuated forpressing'down the mid-portion 10f thelrearend of the diamond fold subsequent tothe operation of 'saidarm, and a secondary ironer movably mountedextraneousto the folding-bed and actuated for ironing down the leadingend of the diamond fold and for remaining in its operative posit onuntil the rear end of the diamond fold passes thereunder;

15. Ina paper bag machine employing a rotatable folding-bed and havingmeans for opening out the leading end of'the bag-blank into the diamondfold thecombinationof an arm movably mounted extraneous to thefolding-bed and actuated for entering the mouth of the bag-blank as theleading end of said blank is opened out, and for pressing down the rearend of the diamond fold,

' a primary ironer pivotally mounted extrane ous to the folding-bed onan axis parallel with the axis of rotation of the foldingbedysaid ironerbeing bifurcated for strad dling said arm whereby the path of travel ofsaid ironer is permitted to overlap a portion of the path of travel ofsaid arm, a secondary ironer movably mounted extraneous v to thefolding-bed, said ironer being bifurcated for 'straddlingsaid primaryironer whereby said ironers are permitted to overlap in their paths oftravel respectively, and

means foractuating said ironers.

16. In a paper bag machine employing a rotatable folding-bed'and havingmeans for opening out the leading end of the bagblank into thediamondfold, the combination of an arm pivotally mounted extraneous tothe folding-bed'on an axis parallel with the axis of the folding-bed andactuated for entering the mouth of the bag-blank as the leading end ofsaid blank is opened out and for pressing down the rear end'of thediamond fold, a primary ironer movably mounted extraneous to saidfolding-bed,

said ironer being bifurcated for straddling said arm whereby the path oftravel of said ironer-is permitted to overlap a portion of the path oftravel of said arm a secondary ironer movably mounted extraneous to thefolding-bed5 said ironer being bifurcated for straddling said primaryironer whereby said ironers are permitted to overlap in their pathsof'travel respectively and means for u actuating said ironers. V p

17. Ina paper bag machine employing a rotatable folding-bed and havingmeans for opening out the leading end of the bagblank into the diamondfold, the combination of a primary ironer pivotally mounted extraneousto the folding-bed on an axis parallel with the axis of rotation of thefolding-bed and actuated for pressing down the mid-portion'of the rearend of the diamond fold, a secondary ironer pivotally" mountedextraneous to the folding-bed on an axis parallel with the axis ofrotation of the folding-bed, said ironer being bifurcated for straddlingsaid primary ironer are permitted to overlap, and means for actuatingsaid secondary ironer.

18. In a paper bag machine employing a whereby the paths of travel ofsaid ironers rotatable folding-bed and having means for opening out theleading end of the bagblank into the diamond fold, the combination of aprimary ironer movably mounted extraneous to said folding-bed andactuated for pressing down the mid-portion of the ironer movably mountedextraneous to the folding-bed, said ironer being bifurcated forstraddling said primary ironer whereby said ironers are permitted to;overlap in. their rear endof the diamond fold, a secondary paths oftravel respectively, and toggle means for moving said secondary ironertoward and from the folding-bed.

V 19. In a paper bag machine employing a rotatable folding-bed andhaving means for opening out the leading end of the bagblank into thediamond fold, the combination of a primary ironer pivotally mountedextraneous to the folding-bed on an axis parallel with the axis ofrotation of the folding-bed and actuated for pressing down themid-portion of the rear end of the diamond fold, a secondary ironerpivotally oscillating said secondary ironer relatively tosaidfolding-bed.

Signed at Dexter, in the county of Jeiferson and State of New York, this8th day of August, 1918. g

CHARLES F. SMITH.

15 the folding-bed, said ironer being bifurcated for straddling saidprimary ironer whereby vthe paths of travel ofsaid ironers are permittedto overlap, and toggle means for

